Remove machine-specific IncludePath from SDL.vcxproj

These IncludePath values seem to not actually be needed since nobody
noticed they were wrong for the past couple months.

VisualC/SDL/SDL.vcxproj

@@ -80,18 +80,6 @@
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
     <LibraryPath Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">C:\Program Files %28x86%29\Microsoft DirectX SDK %28June 2010%29\Lib\x86;$(LibraryPath)</LibraryPath>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <IncludePath>D:\dev\steam\rel\streaming_client\SDL\src\hidapi\hidapi;$(IncludePath)</IncludePath>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <IncludePath>D:\dev\steam\rel\streaming_client\SDL\src\hidapi\hidapi;$(IncludePath)</IncludePath>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <IncludePath>D:\dev\steam\rel\streaming_client\SDL\src\hidapi\hidapi;$(IncludePath)</IncludePath>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <IncludePath>D:\dev\steam\rel\streaming_client\SDL\src\hidapi\hidapi;$(IncludePath)</IncludePath>
-  </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <PreBuildEvent>
       <Command>